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  1. Grain Boat

    Mariner 8HP Carb Photo? Hole in Casting?

    Attached is a photo of an engine my brother is working on. There appears to be a hole in the casting that fuel spills out from. Can anyone tell from the photo if this hole is supposed to be there?
  2. Grain Boat

    1973 7.5 Mercury 75 Cooling Issues

    Re: 1973 7.5 Mercury 75 Cooling Issues Hi racerone, Got the powerhead off without too much difficulty. Thanks for the tips. I also have the new rubber seal and nylon washer, yet I'm stuck at removing the old rubber seal as it broke off below the recess around the water tube. Any tips for a...
  3. Grain Boat

    1973 7.5 Mercury 75 Cooling Issues

    Re: 1973 7.5 Mercury 75 Cooling Issues It's only been 8 months since my initial post, so I thought an update was in order. Cabin Fever has compelled me to get this outboard cooling properly. I was able to get the exhaust port cover off without much difficulty. No salt water here. I blew some...
  4. Grain Boat

    1973 7.5 Mercury 75 Cooling Issues

    This motor has survived 25 years of abuse since being relegated to communal cabin use. Of course the impeller (water pump) disintegrated and the engine ran hot on more than a few occasions. The impeller was replaced by a one-man shop on my sister's dime. When I finally got to inspect the work, I...
  5. Grain Boat

    Need To Pull Flywheel On Swedish 4HP Outboard

    I recently had this motor walk into my shop. It's an air-cooled SBM 4HP made in Uppsala Sweden in the 70's. Has a Bing carb and a direct drive shaft (i.e. no reverse). Just like the old OMC motors, you rotate it 180 degrees to get moving backwards. Seems to be in pretty decent overall condition...
  6. Grain Boat

    '63 Lark V What is the purpose of this groove?

    I'm in the process of replacing seals on my lower unit but I'm dogged by the purpose of this groove. Any takers?
  7. Grain Boat

    "63 40HP Electric Shift With Water In Lower Unit

    It has been a pleasant few years since I've posted here because the boat has been running quite nicely. Today however, I took it out for the first time and the engine ran great but the lower unit was slipping. I propped the motor up and could see water running out of a small hole in the...
  8. Grain Boat

    Photo of Steering Setup for Older OB's

    I thought since there seemed to be some interest regarding aftermarket options of steering kits for older outboards (especially to replace cable & pulley systems), I thought I would post a shot of the installation I did. As you can see, I mounted the transom plate directly over the existing...
  9. Grain Boat

    '63 Rude 40HP Needs Low Speed Needle

    Don't ask me why. Just suffice it to say that my low speed needle is shorter than it once was and now I fear that I may likely not be able to lean it out. Kits generally don't include this part and I've done some searching but if anyone knows where I can get one I would appreciate the info. I do...
  10. Grain Boat

    '63 40HP Evinrude top cylinder no fuel UPDATE

    This engine was running pretty decent until it suddenly lost some power. Initially I thought it may be a coil problem since there were some accessories tied into the ignition system. I've since rewired the entire system to isolate the ignition and replaced the plugs, points and condensers and...
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